Lock



July 23, 1935.

R. 5. GOLD 2,008,668

- LOCK Fiied Jan. s, 1933 v INVENTQR ,1 "29 RUSSELL 5. GOLD BY 1 2/ ATTORNEYS.

Patented July 23, 1935 Russell S. Gold, New Britain, Conn, assignor to The American Hardware; Corporation, New Britain, (301111., a corporation of Connecticut Application January e, 1933, Serial No. 650,422

, 11 Claims.

' My=invention-relates to a lock device, and more particularly-to a removable look.

In hotels, apartment houses, office buildings, private dwellings and the like, it is often esirable to remove a lock to reset tumblersor for other purposes.

.lt isv anobject oi the invention to provide simple,inexpensive means permitting ready removability of adock. or look part from its case.

It is. another object to provide a removable lockwhich ,is normally securelyheld in its case and whichmay be readily removed by means of an ordinary passkey and an external instrument.

7 Other objects will be hereinafter pointed outor will become apparent upon reading the specification inconnection with the drawing. I In the drawing which-shows, for illustrative purposes only, one preferred iorm of the invention- K I ,Fig. 1 isa central verticalsectional view in partial elevationof a locking'deviceembodiedin aiknob lock'and illustrating features of the in v on;

1 Fig. 2 is a top. plan View in partial horizontal section or parts shown .infFig. .1.,.the key plug being. rotated to a position at right angles. to that shown in Fig. l and the lock partially with drawn;'

Fig. 3 is a sectional view taken substantially in theplaneof the line 3-.-3 ofv Fig. l;

Fig. 41s a more or less. diagrammatic View of a type oflockncapable of use in connection with my invention. While myinvention may be employed in connection withlocks and latches of different types andem-bodied in various types of knobs, casings, etc., the invention isfil-lustrated in. connection with 'a knob lock applied to a latch unit of the general type disclosed in McKinney Patent No.

1,865,128,.dated June 28,1932. Such alatch unit is partially illustrated in Figfl, wherein 5 designates a cylindrical latch case'tobe fitted in an opening in a door. 'Ihe'latch 6 extends from the lock case Band isretracted through the medium of a crosshead or retra'ctor l in the latch case and is projected by means of a spring 8', as will be understood. A knob cam or "rollback 9 is 'po sitioned to engagethe crosshead 'lf'or latch retractionwh'en the knob'is turned in the usual manner." Asecond canror rollback H] is positioned to also engage the crosshead Z for'l'atch retractionand'is actuated by a spindle H, which key operated. 'Thus, upon actuation of'either of the rollbacks 9; or H] thelatch will be re tracted and when the knob" is dogged against rotation by suitable, meansinot shown) the latch mayjstill be retracted by means of the key actuated rollback in. I

The knob. designated generally. l2 may be secured to the knob rollback 9 in any suitable man- 'ner. The spindle II, as illustrated, extends into the shank l3 of theknob and is key actuated; as will appear. A suitable lock, such asv the pin tumbler lock I 4, is positioned in the 1101151 ing and embodiesa keyactuated plug I5. :The lock may be non-rotatively held in the knob or other casing; as by means of dowels IS-I6, as will be understood. .As illustrated, thelock l4. carries a finish or face-plate IT, in this case secured thereto and closing the opening inthe knob. through which the lock is inserted. I The lock or a IOckJpart, such as the plug, may beheld against withdrawal from the knob or casing by various means, so arranged. as to securely hold the lock. or lock 'paI't inplace during normal actuationfof the plug-and arranged topermit' the lock or look part to be removed upon or, after an'abnormal rotative movement of the plug.

In the. form shown the plug and knob shank 13 are provided with interengagingparts, such asanabutment or pin l8 carried by the plug,

which may engage in rear of Ian abutment flange groove-.263 extends completely around the knob shank, and the abutment l9 at the top is divided from a corresponding abutment'Z'l at the bottom by means of one or more interruptions 22-22 (Fig. 3). While one abutment, such-as l9, will 'sufiice to hold the lock in place in the described form,-the lower abutment 2! is preferably provided so as to permit the lock to be used on either a right or left hand door, it being understood that' when changing from a right .to' a left hand door the knob would be inverted, while the cylinder lock wouldpreferably remain in its:pres-= entposition. 2 r

It will berclear that with the usual passkey 23 the plug'lii may be turned so as to cause the abutment pin I8 to register with one of the-interruptions 22,. after: which the lock may .berfully inserted and the plug again turned to cause the abutment pin. [8 tostand behind the abutment or shoulder l9 and, so long as the-plug is notagain turned sufiiciently far to bring the -pin.|'8 ..op- .posite one of the interruptions .Z2,"the lockwill be securely heldinthe knob against withdrawal.

Theplug is normally held against whatI term the knob, by suitable means, preferably the lock actuated part, in this case the spindle II.

The plug and spindle are arranged to be detachably coupled together. In the form shown the plug is provided with a slot or keyway 24, while an interfitting key or tongue 25 is car ried by a coupling sleeve 26, spring pressed toward the plug by means of a spring 21, and non-rota-tably held to the spindle II, as by means of the pin and slot connection 28. With the plug [5 and spindle ll coupled together as shown in Fig. 1 it will be clear that the plug may not partake of a greater rotation than the spindle H, and the spindle H is limited in its rotation by any suitable means, such as a tall piece on the crosshead l of the lock coming into contact' with the rear of the lock housing 5, as will be understood. Thus, with the plug and spindle II coupled together the plug may not be turned sufficiently far during latch actuation to bring the abutment pin i8 opposite one of the interruptions 22, and the lock is securely held in the knob.

When it is desired to remove the'lock from the knob the spindle and plug are uncoupled from each other so as to free the plug from the spindle l I, and the plug then may be rotated sufficiently far to free the pin l8 from the abutment l9, and the lock may be withdrawn, as heretofore indicated.

In order to permit uncoupling of the plug and spindle II I preferably provide the shank I3 with a small transversely extending aperture 29, for the reception of a small tool, such as a nail or the like 30, which tool engages a part of the coupling member 26, so as to withdraw the keytongue 25 from the keyway 24. In the form illustrated the key-tongue 25 at one side is beveled oh, so as to provide a cam surface 3|, to be engaged by the instrument 30, so that, by a mere insertion of the instrument the coupling sleeve 26 will be withdrawn to the position shown in Fig. 2, after which the plug l5 may be freely rotated and the lock withdrawn. When it is desired to again insert the lock the plug is key turned, so as to cause the abutment pin l8 to be free of the abutment l9, after which the lock is inserted, and even though the key-tongue 25 be positioned so as to be out of register with the keyway 24, the coupling sleeve vl6 will be forced rearwardly, and as soon as the abutment pin I8 is engaged behind the abutment IS, the plug may be turned and the key 25 will snap into the keyway 24. It is, of course, possible also to move the coupling sleeve 26 to its rearmost position, as shown in Fig- 2, by means of the instrument 30 before the lock is inserted in place.

It will thus be .seen that I have provided means to permit ready removal of a lock or look part froma lock casing, such as a knob. No special keys are required, since ordinary passkeys serve to rotate the key plug. No special tools are required, since an instrument, such asa nail 30, may be employed for uncoupling the plug from its actuated part; so as to permit sufiicient rotation of the plug to permit disengagement of the holding means and the removal of the lock.

While only a single means, such as the abutments l8, IQ, for holding the lock in place has been illustrated and shown as holding merely the plugand with it the remainder of the lock, it is to be understood that various other methods may be employed, dependent for effectiveness on a particular positioning of the key plug.

Various other modifications and changes may be made within the scope of the invention as defined in the appended claims.

I claim:

1. In a device of the character indicated, a lock case, a cylinder lock including a key actuated plug, a plug actuated part, means for holding said cylinder lock in said case in all normal rotative positions thereof, coupling means between said key plug and said plug actuated part, said coupling means being operable by means independent of the plug actuating key for uncoupling said key plug and plug actuated part, for the purpose described.

2. In a device of the character indicated, a lock case, a cylinder lock including a key plug therein, a plug actuated part, coupling means between said key plug and plug actuated part for coupling the same together, said coupling means being operable to uncouple said key plug and plug actuated part by means inserted transversely of said key plug from the outside of said lock case, and means for holding said key plug against withdrawal from said case.

3. In a device of the character indicated, a knob having a shank, a cylinder lock including a key plug in said knob, means for holding said plug in said knob in all normal rotative positions of said plug, a plug actuated part, and coupling means for coupling said part and key plug together, said coupling means being operable to uncouple said key plug and part by means insertable in an opening in said shank and accessible when said shank and knob are assembled with a door, for the purpose described.

4. In a device of the character indicated, a

lock case, a cylinder lock, including an operating part carried thereby, a part to be actuated by said operating part, said parts being normally coupled together, means for limiting the movement of one of said parts whereby movement of the other part is limited, and means for securing a part of said cylinder lock in said case, said means being effective during said limited movement, said parts being actuable relatively to each other by means independent of the means for operating said operating part to uncouple said parts, for the purpose described. 5. In a device of the character indicated, a knob having a shank, a cylinder lock in said knob, means for normally holding said lock in said knob, said lock having a key actuated plug, and a plug actuated part normally coupled to said key plug for rotation therewith, said shank having means to permit the uncoupling of said key plug and plug actuated part, said means for normally holding said lock in said knob being operable to release said look from said knob only after said plug and plug actuated part are uncoupled.

6. In a device of the character indicated, a lock case, a cylinder lock therein including a key-actuated plug, a plug-actuated part, said key plug and part being normally coupled together, and means for normally securing a part of said cylinder lock to said lock case, said lock case having an opening in the region where said key plug and plug-actuated part are coupled together, whereby an instrument may be inserted for uncoupling said key plug and plug-actuated part, for the purpose described.

7. In a device of the character indicated, a lock case, a cylinder lock including a key actuated plug, means for holding said plug in said case in all normal rotative positions of said plug, a plug actuated part, and means for coupling said key plug and plug actuated part together, comprising a coupling member, said coupling member being movable relatively to one of said coupled parts for uncoupling said key plug and plug actuated part, said lock case having an opening affording access to said coupling member when said lock case is assembled with a'door for uncoupling said key plug and plug actuated part, for the purpose described.

8. In a device of the character indicated, a knob, a cylinder lock including a key operable plug, means for securing said cylinder lock in said knob and operable to release said cylinder lock from said knob upon an abnormal rotative movement of said key plug, a plug actuated part, and a coupling member for coupling said key plug and plug actuated part to each other, said key plug when coupled being held by said plug actuated part against abnormal rotative movement, said coupling member having a cam surface and the shank of said knob having an opening for the insertion of an instrument to engage said cam surface for uncoupling said key plug from said plug actuated part, whereby said key plug may be rotated to abnormal position, for the purpose described.

9. In a device of the character indicated, a knob, a cylinder lock comprising a key actuated part, a part to be actuated thereby, one of said parts carrying a coupling member capable of movement relatively to one of said parts for coupling and uncoupling said parts, the shank of said knob having an opening for the reception of an instrument to uncouple said parts, and means for securing said cylinder lock in said knob, said means being operable to release said lock and knob upon a predetermined rotation of said plug.

10. In a device of the character indicated, a knob, a cylinder lock including a key operable plug in said knob, a spindle, and a coupling member carried by said spindle, said coupling member and key plug having keying means for keying said plug and spindle for unitary rotative movement, said key plug and a part of said knob having interengaging means for holding said cylinder lockin said knob during normal spindle operating movement of less than a complete revolution of said key plug, said interengaging parts being disengageable from each other upon movement of said key plug greater than normal movement when uncoupled from said spindle, said spindle when coupled serving to limit the rotative movement of said plug to said normal rotation of less than a complete revolution, the shank of said knob having an aperture therein for the reception of means tomove said coupling member for uncoupling said key plug and spindle.

11. In a device of the character indicated, a lock case, a cylinder lock comprising a key plug therein, a plug actuated part, and a coupling memberhaving keying means for keying said key plug and plug actuated part for unitary rotation, said coupling member having a cam surface and said lock case having an opening adjacent thereto ,for the reception of means to engage said cam surface for uncoupling said key plug and plug actuated part, for the purpose described.

RUSSELL S. GOLD. 

